variants
or less commonly sea floor
plural seafloors also sea floors
: the floor of a sea or ocean : seabed
The Earth's crust, in this view, is divided into several immense plates that make up the continents and seafloors, and that all float on a hot, plastic, subterranean "mantle."—
Walter Sullivan
Walter SullivanExamples of seafloor in a Sentence
Recent Examples on the Web
Ocean secrets Corals appear stationary, permanently anchored to rocks or other surfaces on the seafloor.
—Katie Hunt, CNN, 1 Feb. 2025
Some are near cold seeps – where hydrocarbons trapped beneath the seafloor escape upwards in columns of bubbles.
—Michael Loria, USA TODAY, 31 Jan. 2025
During one of their dives, researchers noticed an unfamiliar-looking sea cucumber resting on the seafloor about 3.5 miles deep, the study said.
—Aspen Pflughoeft, Miami Herald, 31 Jan. 2025
So, Vanguard, as well as the future Sentinel, will also have backup power sufficient to provide 96 hours of life support, in an external, adjacent pod on the seafloor.
—IEEE Spectrum, 31 Dec. 2024
See all Example Sentences for seafloor 
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Katie Hunt, CNN, 1 Feb. 2025
Some are near cold seeps – where hydrocarbons trapped beneath the seafloor escape upwards in columns of bubbles.
—Michael Loria, USA TODAY, 31 Jan. 2025
During one of their dives, researchers noticed an unfamiliar-looking sea cucumber resting on the seafloor about 3.5 miles deep, the study said.
—Aspen Pflughoeft, Miami Herald, 31 Jan. 2025
So, Vanguard, as well as the future Sentinel, will also have backup power sufficient to provide 96 hours of life support, in an external, adjacent pod on the seafloor.
—IEEE Spectrum, 31 Dec. 2024
See all Example Sentences for seafloor
Dictionary Entries Near seafloor
Cite this Entry
“Seafloor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/seafloor. Accessed 16 Feb. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share